Adjustable steb forvehicles



Patented June 3, 1930 igea esz CHARLES nonnsg: on Heron; Iowa ADJUSTABLESTEP: FOR VEHIGLES;

Application filed my 24;;

This invention relatesto certain new and useful improvements in steptreads especially'designed for application upon vehicles of the commoncarrier class. n

An object of the invention contemplates the provision and arrangement ofmeans whereby the step may be retracted while the vehicle.

is in motion.

Another object of the invention consists of retaining means for the stepto yieldingly hold thelatter in normally inactive P0817? tions.

An additional object of, the invention embodies an operating mechanismwhereby the,

steps may be controlled from aremoteflpoint.

With the above and other objects in view,v the invention furtherconsists of the following novel features and details of c onstruction tobe hereinafter more fully described, illustrated in the accompanyingdrawing and:- pointed out in the appended claim.

In the drawing extended and retracted.

in like characters of reference denote corresponding parts,thereferencecharacter 10indicates generally the chassis of a vehicle,not shown, having bolsters 11 arranged hori; zontally thereof upon itsupper side and at.

5 spaced'intervals to support the side rails 12 of a vehicle bodyconstruction. Spacers 18,

to carry the bottom body.

The invention primarily resides in the provision and arrangement of legmembers 14:

of plate like construction having pivotal connection at their uppermostends with the inner sides of the rails 12 of the vehicle body andadjacent the rearmost extending ends thereof. Bolt members 15 areemployed as the means of attachment for the legs and which also permitpivotal swinging movement therefrom. Shelf portions 16, right- 0angularly ofiset from the lowermost dependthe step. is, extendedi'foruse.

.92 ent up; 138.0%09- ingendslof the legs, are-t,vvistedv immediatelyportiQfI'lSfWillj expose a relatively wide. fiat su'ra t he e; p r ns oa t p t d sllippor dr bya QQ ine-P1at'e 18 ofijeli ngafedili -n tion adjfacent theintersection[whereby the. shelf haVingecc'entri'c pivotal,connection with-the I legs aftv their outermost ends are upwardly and"obliquely inclined; fromitlie Pilot. a

:nection's, for's liding} adjustable connection" Withthe a j Went endsofthe bolsters 11., Said lo king plates have notches. on ortibn'sremove'd' indicated' generally as 'atIIS to, define shoulders 1 .9. to,facilitate flush ,cfontacuwith the adjacent sue-of the bol ster'aforemen tioned. The method of association, onconnectionbetweenthebolster andlftheshonlder portions 19, the locking, plates :18,iI-iQi Qnt to thjeprjovision ofjthe notchesl8 wil tasimilarp n p nnothei' l fi' h s.

ftion are inyerted. in the -manner' shown-111* accommodate the notched;ends of the'loc k i 11 g. plates whereby the latter. will be guided 7while sliding to preventbinding actioii atits arranged in the mannershown, are designed POi LDQfP VQMU (l neqtionlwi hgthfl eg -f.

or floor of the vehicle.

' mechanism for the treadfor step, anclwhich I t isalfio my intention toproviclea release resides in the 'liiployment f of chain mem 'bers 22joinedtat their outermost, ends with a, commonpull, ring 23 andsubsequently passed through a screw. eyev 24 conveniently arrangedupontheTunde'rsurface of the rear;

'mostofthe spaeerslfie The opposite oblique will be arranged immediatelyabove the lock lubi' l l r'etai'n' the step in; the position shownva'nd4 a ainst accidentaldisplacem'ent.o Aretracit ile 7 j spring20havingconnection at its ne'ndswith Figure 1 is a side elevation of my invenh'i' i GTmG i B'P ti D f' li e il'z n tion illustrating by fulland-dotted lines the 5 respective positions of themechanism when; w p pI i j ,";engagementl, of said ,b'o'lfsters at all times 7 Figure 2 is atop plan view of the device fWi h th l ntio e 0f th bO S -S-W extendedfor use.

Referring to the drawing in detail where Patented June 3, 1930- on, ornonnon, nuemnn mam Oll FISH SKINS Bo Drawing.

This invention relates to an improved process for the preparatorytreatment of skins of fish such as and in particular, the Plagiostomi.

5 The invention has for its object a process for the preparatorytreatment of skins of fish such as, and in particular, the Plagiostomiwhich constitute, among the Chondropterygii-Selachii, an order to whichthe sharks belong the said process presenting numerous advantages, inparticular that of considerably reducing the operation of tanning properwhich may, if desired, be'done away with altogether, considerablyreducing the cost price of the leather, a'further advantage of theprocess lying in the fact that it permits of obtaining a leather whichis at the same time very supple and, very resistant.

The present invention consists of a process 2 in which the skins, afterthe known treatment with lime, but fora considerably reduced vdurationare subjected to the action of colloids, of the type of gum tragacanthor colloids which originate from radiate parts of plants (with radiatefibrous structureg. Traganth or tragacanth is a kind of gumo tained fromvarious species. of Astragalus,

Foenum Grsecum is the-elongated legume of Siligna. dulcis, the alga isitself a fiber.

As a result of the preparatory treatment, the operation of tanningproper can be considerably reduced; for instance, a tanning by thechrome process offrom 4 to 5 hours will be sufiicient to obtain aleather of excellent guality. This result may be explained by the actskin appear to surround themselves with an insulating envelope of thecolloidal substance, in such way that a sort of tanning action is 49obtained, the different fibres being so insulateii {rota one anotherthat the fibrous conglomerate then presents a cellular structure. Thistreatment with colloids may be simply followed by a mechanical treatmentconsisting in sol-'ecting the skins to alternate tension and expansionby which the fibres so 7 insulated will be disposed parallel to oneanother, and the leather obtained will present an extraordinarysuppleness and also very greatraistance. 7

Application filed January 24, 1928, Serial No. 249,204, and in. BelgiumJanuary 26,

that by this treatmentthe fibres of the This preparatory treatment withcolloidsmay, moreover, be combined with the treatment for hating theskins'by enzymes, to. which the treatment with colloids will beconsecutive, after which the skins will be tanned or simply subjected toa mechanical treatment.

By way of an example of carrying the process into effect, the operationmay be as follows: Gum tragacanth or water of algae or of fenugreek arediluted in such way as to form a viscous liquid of about 5%concentration in which the limed skins are treated for approximately 6hours at a temperature of about 30 (3., in a pit where they are stirredor in a fulling mill. After a five-minute rinsing,

the skins are dried and treated mechanically as explained above or,again, subjected'to a tanning by a vegetable or mineral process, forinstance, to a tanning by chrome.

The skins of Plagiostomi prepared in accordance with the process withcolloids, may, moreover, be employed to advantage for the production ofwaterproof leathers, and for this purpose the skins so treated are driedand impregnated with a waterproofing solution such as, for preference, asolution of rubber in benzols or a solution of stearate of lime inbenzols; after drying, the skins are subjected to a currying process.

It is naturally understood that it is possible, without departing fromthe invention, to make variations and modifications of details in theprocess which forms the subject thereof.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. A process for the preparatory treatment of skins ofPlagiostomi and the like, including the steps of treating the skins withlime then for a considerably reduced period subjecting them to theaction of colloids of the type of gum tragacanth. 2. A process for thepreparatory treatment of skins of fish as claimed in claim 1including-the additional stepsofbatin the skins with enzymes after limmand fore colloidal treatment, the said after a short proximatelytreatment with lime being subjected to the enzymic action of enzymesprior to the treatment with colloids.

3. A process as claimed in claim 1 wherein the skins are waterproofed byimpregnating them after drying with a benzolic solution of waterproofingmaterial. I

4. A process for the treatment of skins of sharks and the like,comprising the introduction of said skins after liming and otherpreparatory treatment into a viscous liquid containing about 5% of umtragacanth or fenugreek for apwater extract of algae or o 6 hours at atemperature of about 30 C., sprinkling said skins, and drying said skinsto prepare them for final treatment.

In testimony whereof I afiix my signature. ALFRED EHRENREICH.

